Round heel iron



- Jan. 11, 1938. A, o, SAMUELS 2,105,229

ROUND HEEL IRON Filed Nov. 14, 1955 A NVENTOR ef .ifm/2.5

Patented Jan. 11, 1938 .Y ROUND. HEEL IRON Abe "0. Samuels, Rochester, lN. Y., assigner to.

:Samsom-United Corporation, Rochester, N. Y.

- Application November 14, `1935, Serial Ncf.-49,837

. `15` Claims. This .invention relates lto ielectricallyheated :irons for ironingV fabrics and pressing garments an'd has for its :object to provide 1suohan iron*V `with `a heatedroundheel for the purpose of "15 iincreasing the efficiency and Vusefulness ofthe liron.` This and other objects 'ofthis invention'will become more readily apparent from the detailed description thereof which follows, reference being lo had tothe accompanying drawing inwhich Y "Figure 1 isa side elevation of an `electrically heated iron embodying my invention.

`Figure 2' is atop plan view'ofthe sole plate of the iron with thev vheating coil embedded therein.

Figure 3` is a detail sectionalview ofthe sole plate taken on the line' Sm--Sx'of Figure 2.

`I'n the' several iigures of the drawing like referencenumerals indicate like parts. i

F20 Theelectric'ally heated iron 'forming the subject matter of my present inventionV has been foundtolincreasethe efficiency and usefulness fof such an iron.` Heretofore no special attention wasgivento the heating of the heel of an iron withthe result that whilethe body and front of the Viron was heated for the Vefiicient operation and use of the iron, theheel portion was neglected and no special use Vcould be made of it. Practically allironsnow on the `market have a sharply cornered heel and the heating unit carried by the solerplateisfso vpositioned with'relation to the heel thatheat is very poorly transmitted tothe edge thereof. If therefore the ironis tilted to rest on the heel,V but a small portion Vof theheat generated at the heel end of the iron is transmitted tothe fabric lfor ironing purposes.

In the use of an electrically heated iron it has been found advantageous toltilt the iron'an'd` use "140 the heel ofthe iron Vfor ironing purposes and of 'l course this -madetfnecessary to round the heel toprevent tearing ofthe v'fabric-asthe heel is `moved overit. Rounding the heelhowever did Snot solve the probleinfof making the' heel-an efhcient fmediurnforl speciali ironing purposes becausetheheating element-could not 'transmit n `sufficientiheat to-'theheel to-'makel its use yelfec.-

tive. In my present' invention this drawback has ffbeen entirely eliminated by 1 the usef of .ai round 5U fheel.inlcombination with la 'heatingf coil which r is' located. in theheel plate in 'predeterminedtrela- `tonJto thewentirecurved surface ofthe'heelso as' to'quickly andiA efficiently heat the round :heel andiwhat is most" important maintainv the" necese55 saryaheatzduring the ironingrprocess.'V

As illustrated in Ythedrawing the iron is made up of the sole plate l, the top of which is covered `bythe shell2 with the handle 3 clampedto the top of the shell and anchored to the sole, plate :by means of theranchoring bolt d. `'llheform of l: "sole plate illustrated inthedrawing is cast with a pocket in the form of the channel 5 therein. Therouter wallsofl this channel are substantially 'parallel to the sides and the heel endof the sole plate and are suitably spaced therefrom.v .The=1'0 )channel is lled with a suitable cementfand in the cement is embedded the heating coil which is located and distributed so as to eiiiciently transmit and maintain the proper heat over theientir'e .sole plate.

of the iron has'heretofore been accomplishedwith regard tothe forward and thebody portion of fthe iron but this has 'never been attained for the Aheel of the sole plate. As long as the heel `ofanironV was not used for special ironing' thisr20 of course was not apparent 'in the use ofthe iron. In the development of my present `inven- `tionofa round heel for the sole plate for special ironingpurposes however, I have found it most important to so locate a portion of the heating 3.25 `coil 6 that not only the entire curved surface of the heel is quickly heated to the proper temperaturelbut that this heat is constantly maintained 'while' the heel is being used for ironing purposes, 'and both sole and heel portions uniformly heated. #30

It is a well known fact that any portion of a heated body which is brought `in contact with a `moist surface rapidly loses heat until the 'moisture is evaporated. 'This absorption of heat cools the heated body unless sufficient reserve heat is` produced by the heating coil and transmitted to the portion of the body in contact with the moist surface. To make this possible for the heel of the sole plate of an electrically heated iron `I have therefore embedded or otherwise mounted 40 the heating coil portion in the rear ofthe sole plate in close proximity to the heelA and have rounded the heel substantially concentric to the "heating coilso that any part of the .curved sur- .face of theround heel will havea constant andf45 equal amount of heat transmitted to it from-the heating'coil. This is illustrated in Figure 3` in whichthe .heating coil portionVA 6A which extends parallel to the heel of the iron, is substantially concentric to the surface'of the rounded heel 1-50 and in close proximity thereto.

As `shown particularly in Figures 2 and V3, the heelof the iron istransverse of the longitudinal axisf ofthe iron, and has a curved surface which "isformed bytranslating a substantiallylinearc The emcient distribution of theheatfl Y element through successive positions which are parallel to each other, such as an arc of a cylindrical surface. As shown, the heel portion 6--A of the heating element is positioned with its axis substantially parallel to the curved heel surface, that is, to the successive positions of the linear element generating the heel surface, or theaxis of the cylindrical surface.

From the foregoing description of the construction of my improved device, the operation thereof and the method of applying the same to use will be readily understood. It will be seen that I have provided a simple, inexpensive and ecient means for carrying out the objects of the invention and while I have particularly described the elements best adapted to perform the functions set forth, it is obvious that various changes in form, proportion and in the minor details of construction may be resorted to, without departing from the spirit or sacrificing any of the principles of the invention.

I claim:

1. In an electrically heated iron having a heavy cast sole plate, a rounded heel provided on said sole plate and a heating coil carried by said sole plate in close proximity thereto and substantially concentric thereto.

2. In an electrically heated iron, a heavy sole plate having a forward toe portion and a rear heel portion, said heel portion being substantially straight transversely of the longitudinal axis oi said iron, an electrical heating element mounted in said sole plate and having a portion positioned in the heel portion of said sole plate substantially transverse of the longitudinal axis of said iron, said heel portion of said sole plate extending downwardly with a rounded heel surface substantially parallel to and curved about said heel portion of said heating element as a center of curvature for keeping all portions of said rounded heel surface substantially uniformly heated at all times.

3. In an electrically heated iron, a heavy sole plate having a forward toe portion and a rear heel portion, the surface of said heel portion being formed by translating a substantially linear generating element along a curve generating through successive positions which are substantially paralel to each other and are transverse of the lon gitudinal axis of said iron, and an electrical heating element mounted in said sole plate and having a heel portion thereof positioned in the heel portion of said sole plate close to said heel surface and transversely of the longitudinal axis of said iron, said heel portion of said heating element having a substantially straight axis which is substantially parallel to the successive positions of the generating element of said heel surface and which passes substantially through the center of curvature of said generating curve, whereby said heel surface is substantially uniformly heated at all times.

4. In an electrically heated iron, a heavy sole plate having a forward toe portion and a rear heel portion, the surface of said heel portion being substantially an arc of a cylindrical surface whose axis is transverse of the longitudinal axis of said iron, and an electrical heating element mounted in said sole plate and having a heel portion thereof positioned in the heel portion of said sole plate close to said heel surface and transversely of the longitudinal axis of said iron, said heel portion of said heating element having a substantially straight axis which is substantially coincident with the axis of said cylindrical surface, whereby said heel surface is substantially uniformly heated at all times.

5. In an electricallyl heated iron, a heavy sole plate having a forward toe portion and a downwardly rounded rear heel portion, an electrical heating element carried by said sole plate and having a heel portion thereof carried by said rounded he-el portion of said sole plate in close proximity to the surface of said rounded heel portion of said sole plate, said heel portions of said sole plate and of said heating element being so mounted and arranged that the heat-conducting paths diverging from the heel portion of said heating element to different points on the surface of the heel portion of said sole plate have substantially equal radial lengths.

6. In an electrically heated iron, a heavy sole plate having a forward toe portion and a downwardly rounded rear heel portion, an electrical heating element carried by said sole plate and having a substantially linear heel portion thereof carried by the heel portion of said sole plate, the outer surface of the heel portion of said sole plate being curved about said heel portion of said heating element as a center of curvature for keeping all portions of the surface of said rounded heel portion substantially uniformly heated at all times.

7. In an electrically heated iron, a heavy sole plate having a forward toe portion and an outwardly downwardly rounded heel portion. the heel portion of said sole plate being provided adjacent its edge with a channel having a lower rounded heel surface adjacent said rounded heel portion of said sole plate, an electrical heating element mounted in said sole plate and having a heel portion thereof mounted in said channel in said heel portion of said sole plate, and insulating material in said channel for embedding said heel portion of said heating element therein, the rounded heel surface of said channel being substantially parallel to the outward rounded heel surface of said sole plate, said rounded heel surface of said channel and the outward rounded heel surface of said sole plate being curved about said heel portion of said heating element as a center of curvature.

8. In an electrically heated iron, a heavy sole plate having-a forward toe portion and an outwardly downwardly rounded heel portion, the heel portion of said sole plate being provided adjacent its edge with va channel having a lower rounded heel surface adjacent said rounded heel portion of said sole plate, an electrical heating element mounted in said sole plate and having a heel portion thereof mounted in said channel in said heel portion of said sole plate, and insulating material in said channel for embedding said heel portion of said heating element therein, said heel portion of said heating element and said heel portion of said sole plate and said rounded heel surface of said channel being so constructed and arranged that the heat conducting paths between the rounded heel surface of said channel and the outward rounded heel surface of said sole plate traversed by heat rays divergingly radiated from said heel portion of said heating element have substantially equal lengths.

9. In an electrically heated iron, a heavy sole plate having a forward toe portion and an outwardly downwardly rounded heel portion, the

element mounted in said sole plate and having a heel portion thereof mounted in said channel in said heel portion of said sole plate, and insulating material in said channel for embedding said heel portion of said heating element therein, said heel portion of said heating element and said heel' portion of said sole plate and said rounded heel surfaceof said channel being so constructed and arranged that the diverging heat-conducting paths from said heel portion of said heating element to the outward rounded heel surface of said sole plate have substantially equal lengths.

10. In an electrically heated iron, a heavy sole plate having a forward toe portion and an outwardly downwardly rounded heel portion, the heel portion of said sole plate being provided adjacent its edge with a channel having a lower rounded heel surface adjacent said rounded heel portion of said sole plate, an electrical heating element mounted in said sole plate and having a heel portion thereof mounted in said channel in said heel portion of said sole plate, said heel portion of said heating element having a crosssectional contour substantially symmetrical about a center of symmetry, and insulating material in' said channel' for embeddingY said heel portion of said heating element therein, said outward surface of said rounded heel portion of said sole plate being substantially symmetrical about the center of symmetry of said heating element and substantially parallel to the contour of said heating element whereby all points of said out-- ward rounded heel surface of said sole plate are substantially equally heated. Y

11. In an electrically heated iron, a heavy sole plate having a forward toe portion and an outwardly downwardly rounded heel portion, the heel portion of said sole plate beingV provided adjacent its edge with a channel having a lower rounded heel surface adjacent said rounded heel portion of said sole plate, an electrical heating element mounted in said sole plate and having a heel portion thereof mounted in said channel in said heel portion of Vsaid sole plate, said heel portion of said heating element having a crosssectional contour substantially symmetrical about a center of symmetry, and insulating material in said channel for embedding said heel portion of said heating element therein, said outward surface of said rounded heel portion of said sole plate and said rounded heel surface of said channel being substantially symmetrical about the center of symmetry of said heating element and substantially parallel to the contour of said heating element whereby all points of said outward rounded heel surface of said sole plate are substantially equally heated.

12. In an electrically heated iron, a heavy sole plate having a forward toe portion and a downwardly rounded rear heel portion, an electrical heating element carried by said sole plate and having a substantially fllar heel portion thereof carried by the heel portion of said sole plate, the cross-sectional contour of the outer surface of the heel portion of said sole plate being substantially circular about a point in said heel portion of said element as a center.

13. In an electrically heated iron, a heavy sole plate having a forward toe portion and an outwardly downwardly substantially circularly rounded heel portion, the heel portion of said nel in said heel portion of said sole plate, the

outer surfaceof vsaid circularly rounded heel portionof said sole plate and said circularly rounded heel surface of said channel substantially having a .common center in said heel portion of said heating element. Y

14. In an electrically heatedV iron, a heavy p Vsole plate havinga forward toe portion and an outwardly downwardly substantially circularly rounded heel portion, the heel portion of said sole plate being provided adjacent its edge with Y a channel having a lower substantially circularly rounded heel surface adjacent said rounded heel portion of said sole plate, and an electrical heating element of substantially circular cross-section mounted in said sole plate and havingV a heel portion thereof mounted in said channel in said heel portion of said sole plate, the outer surface of said circularly rounded heel portion of saidv sole plate and the circumference of said heel portion of said heating element being Y substantially concentric.`

15. In an Velectrically heated iron, a heavy sole plate having a forward-toe portion and anV outwardly downwardly substantially circularly rounded heel portion, the heel portion of `said sole plate being provided adjacent its edge with a channel having a lower substantially circularly rounded heel surface adjacent said rounded heel portion of said sole plate, and an electrical heating element of substantially circular cross-section mounted in said sole plate and havingV a heel portion thereof mounted in said channel in said heel portion of said sole plate, the outer surface of said circularly rounded heel portion of said sole plate and said circularly rounded heel surface of said channel and the circumference of said heel portion of said heating element being substantially concentric.

ABE O. SAMUELS. 

